JavaScript

Array

Array.every

Array.every repeat till get false otherwise return true

Array.some

Array.some repeat till false

(If you know C# LINQ , it's like Any vs All)

• some will return true if any predicate is true

• every will return true if all predicate is true

Where predicate means function that returns bool ( true/false) for each element

every returns on first false. some returns on first true

Difference between JavaScript Array every and someStack Overflow

Async array map

How to use Async and Await with Array.prototype.map()flaviocopes

Prototype

String.prototype.myNewMethod = function () {
  return this.toString().toUpperCase();
};